code: def sizesrc(self, val):
      self["sizesrc"] = val
  
file_path: catboost/contrib/python/plotly/py2/plotly/graph_objs/treemap/_textfont.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 12 for calling the Textfont obj's underlying member method code with example usage: obj.sizesrc(val) without return types